3.3 Olfactory and Gustatory Systems Part 2 Flashcards
What are papillae?
raised bumps on the tongue
What are the functions of the papillae?
help grip food on the tongue
What are the three types of papillae?
cicumvallate
fungiform
filiform
Which papillae contain taste buds?
circumvallate
fungiform
What are taste buds?
chemical receptors that are stimulated by the chemical composition of food
What cells form taste buds?
gustatory cells
supporting cells
What are gustatory cells?
chemoreceptor cells inside of the taste buds
What does each gustatory cell terminate in?
gustatory hair which projects into the saliva to detect dissolved chemical
What is the function of the supporting cells?
separate the taste receptor cells from one antoher
What are basal cells?
stem cells that will divide into new supporting cells and Gustatory cells
What other receptors does the mouth contain?
nociceptors
thermoreceptors
Where are the action potentials created for gustation?
gustatory hairs
Which cranial nerves transmit taste impulses to the thalamus?
facial
glossopharyngeal
Which lobe receives information about taste?
parietal
WHich portion of the tongue is innervated by the facial nerve for taste?
anterior 2/3s
WHich portion of the tongue is innervated by the glossopharyngeal nerve?
posterior 1/3
What are the five primary tastes?
sweet
salty
bitter
umami
sour
What produces the sweet taste?
sugars
some amino acids
What produces the salt taste?
metal salts
What produces the sour taste?
acids
